Malicious PDF — malware analysis report

Static analysis result for SHA-256 62fed6067a765538…

MALICIOUS

PDF

97.4 KB Created: 2021-07-01 23:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fce5e8931c07274b7c5baca317593db5 SHA-1: 81d6b19484f8568ad153525b82bfaa9c97185593 SHA-256: 62fed6067a7655387a3c569066b50d76760d205de1a6368470554529567bdb0b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting. These links likely serve to redirect users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://gleneaglehoa.org/images/file/14902664246.pdf
    • http://oceanstatevolleyball.org/clients/879495/File/xewogowerosesovufulivez.pdf
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160ae6ee537546---sizolivovike.pdf
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2aa254a939---vumuvebe.pdf
    • http://cn-daomeng.com/upload/userfiles/files/783c73525eca9e744e09a09c2def10dc.pdf
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/o1hf5fbie86j93hr0jlm1lpvfv/34958423186.pdf
    • http://saluteebenesseresas.it/userfiles/files/76146066318.pdf
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c0664bfa9---pififotef.pdf
    • http://www.aadhar-interior.com/userfiles/file/45697762431.pdf
    • http://vietthanhstone.com/images/news/file/96536739808.pdf
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2384aa206f---26629763827.pdf
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/d55d216b7b6fe5251a7c3937b0895f42/39662175445.pdf
    • http://sukhabalka.com/files/file/jobuxobigarofafar.pdf
    • https://nbtele.com/en/cache/fck_files/file/11552986983.pdf
    • http://amphorabeautyclub.com/campannas/file/vidafubenezuziw.pdf
    • https://airflow-skateboards.com/upload/file/37708768918.pdf
    • http://ahkjt.com/upfile/file/xikusomij.pdf
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/6480c98f1bc88b997381557d83af8107/wiloduzelelipibedifuva.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/6e352935ab789f18df9966b7d0466373/90761699187.pdf
    • http://csc0535.com/userfiles/file/20210628192211_oxy3ik.pdf
    • https://www.tunnel.de/files/uploaded/file/7313143985.pdf
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a353ff97006---livupapedajuserejilejiku.pdf
    • http://ychnjl.net/userfiles/files/mamuxujefab.pdf
    • http://tomaszskiba.com/userfiles/file/65381782274.pdf
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/fqp3re44hh9ph8r9ee14ql98jg/44292234500.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=inside+books+project
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b96.bin
ba800e4b7007eceb4462b2a02d7903e57ac42faf1edd8c6759f074594f73d4cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B96 10612 bytes
font_01_sfnt_off000133ab.bin
a544a64e6a92ecda58913dbf0d7c9e1e6dcb20ae77dafbac09f076fde34da30f
pdf-font-stream PDF embedded font (sfnt) at offset 0x133AB 17168 bytes
font_02_sfnt_off0001608b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1608B 16792 bytes